[Bug bootstrap/30974] New: pdp11-dec-bsd will not successfully build

[Bug bootstrap/30974] New: pdp11-dec-bsd will not successfully build

[hbent at cs dot oberlin dot edu]

I have an x86 NetBSD box and am attempting to build gcc for pdp11-dec-bsd.  I
have binutils 2.17 installed and configured for that target, and I have
includes and libraries from the latest revision of 2.11BSD.

configure is run as
../configure --target=pdp11-dec-bsd --enable-languages=c --with-gmp=/usr/pkg

Building gets to this point:

/usr/src/gcc/vax/./gcc/xgcc -B/usr/src/gcc/vax/./gcc/
-B/usr/local/pdp11-dec-bsd/bin/ -B/usr/local/pdp11-dec-bsd/lib/ -isystem
/usr/local/pdp11-dec-bsd/include -isystem /usr/local/pdp11-dec-bsd/sys-include
-O2 -g -O2 -msoft-float -O2  -O2 -g -O2  -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  
-W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes
-Wold-style-definition  -isystem ./include  -O2 -mfloat32 -g  -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc  -I. -I. -I../../.././gcc
-I../../../../libgcc -I../../../../libgcc/. -I../../../../libgcc/../gcc
-I../../../../libgcc/../include -I../../../../libgcc/../libdecnumber
-I../../../libdecnumber -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep
-DL_muldi3 -c ../../../../libgcc/../gcc/libgcc2.c \

cc1: warning: target system does not support debug output
cc1: warning: target system does not support debug output
cc1: warning: target system does not support debug output
/var/tmp//ccSoMtqq.s: Assembler messages:
/var/tmp//ccSoMtqq.s:323: Error: junk at end of line, first unrecognized
character is `0'
/var/tmp//ccSoMtqq.s:324: Error: junk at end of line, first unrecognized
character is `0'
/var/tmp//ccSoMtqq.s:325: Error: junk at end of line, first unrecognized
character is `0'
/var/tmp//ccSoMtqq.s:326: Error: junk at end of line, first unrecognized
character is `0'
/var/tmp//ccSoMtqq.s:329: Error: junk at end of line, first unrecognized
character is `0'
/var/tmp//ccSoMtqq.s:330: Error: junk at end of line, first unrecognized
character is `0'
gmake[4]: *** [_muldi3.o] Error 1

The mis-generated assembly is at the very end of the file, and looks like this:

LC_0:
        0 /* short */
        0 /* short */
        0 /* short */
        0 /* short */
        .even
LC_1:
        0 /* short */
        0 /* short */

Unfortunately I have not the faintest clue as to what is happening here, or
why.  I would be happy to provide more details if someone can tell me what they
need.


-- 
           Summary: pdp11-dec-bsd will not successfully build
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hbent at cs dot oberlin dot edu
 GCC build triplet: i386-unknown-netbsdelf4.99.9
  GCC host triplet: i386-unknown-netbsdelf4.99.9
GCC target triplet: pdp11-dec-bsd


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30974

[Bug target/30974] pdp11-dec-bsd will not successfully build

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2007-02-26 21:30 -------
static bool
pdp11_assemble_integer (rtx x, unsigned int size, int aligned_p)
{
  if (aligned_p)
    switch (size)
      {
      case 1:
        fprintf (asm_out_file, "\t.byte\t");
        output_addr_const_pdp11 (asm_out_file, x);
        fprintf (asm_out_file, " /* char */\n");
        return true;

      case 2:
        fprintf (asm_out_file, TARGET_UNIX_ASM ? "\t" : "\t.word\t");
        output_addr_const_pdp11 (asm_out_file, x);
        fprintf (asm_out_file, " /* short */\n");
        return true;
      }
  return default_assemble_integer (x, size, aligned_p);
}


TARGET_UNIX_ASM is true for pdp11-dec-bsd


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|bootstrap                   |target


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30974

[Bug target/30974] pdp11-dec-bsd will not successfully build

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2007-02-26 21:32 -------
Actually wait, you are using binutils but this target really defaults to the
old as and not binutils at all.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30974

[Bug target/30974] pdp11-dec-bsd will not successfully build

[hbent at cs dot oberlin dot edu]

------- Comment #3 from hbent at cs dot oberlin dot edu  2007-02-26 21:38 -------
I'm not clear on what you're saying.  Is binutils not going to work at all for
this target?  It can't be built natively AFAIK, so I'm not sure what toolchain
I should be using if binutils isn't going to work.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30974

[Bug target/30974] pdp11-dec-bsd will not successfully build

[ni1d at arrl dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30974

Paul Koning <ni1d at arrl dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ni1d at arrl dot net

--- Comment #4 from Paul Koning <ni1d at arrl dot net> 2010-10-28 21:22:25 UTC ---
At this point pdp11-*-bsd has been removed.  It probably could be put back in.

The error is caused by the fact that gcc is generating assembly code for the
2BSD unix assembler, but you're feeding it to gas.  The "other" assembly
format, even though it's called "DEC assembler" is actually the format expected
by pdp11-gas.  

As a workaround you can compile with -mdec-asm.  What we really need here is a
--with-gnu-as configure switch that tells the pdp11 target code to default to
the "dec" (really GNU) assembler format.